Classifications

• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
  • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
  • G01N21/84—Systems specially adapted for particular applications
  • G01N21/88—Investigating the presence of flaws or contamination
  • G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
  • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
  • G01N21/01—Arrangements or apparatus for facilitating the optical investigation
• • G—PHYSICS
  • G06—COMPUTING OR CALCULATING; COUNTING
  • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
  • G06T7/00—Image analysis
  • G06T7/0002—Inspection of images, e.g. flaw detection
  • G06T7/0004—Industrial image inspection
• • G—PHYSICS
  • G06—COMPUTING OR CALCULATING; COUNTING
  • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
  • G06T7/00—Image analysis
  • G06T7/0002—Inspection of images, e.g. flaw detection
  • G06T7/0004—Industrial image inspection
  • G06T7/001—Industrial image inspection using an image reference approach
• • G—PHYSICS
  • G06—COMPUTING OR CALCULATING; COUNTING
  • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
  • G06T7/00—Image analysis
  • G06T7/70—Determining position or orientation of objects or cameras
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
  • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
  • G01N21/84—Systems specially adapted for particular applications
  • G01N21/88—Investigating the presence of flaws or contamination
  • G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
  • G01N2021/8887—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges based on image processing techniques
• • G—PHYSICS
  • G06—COMPUTING OR CALCULATING; COUNTING
  • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
  • G06T2207/00—Indexing scheme for image analysis or image enhancement
  • G06T2207/10—Image acquisition modality
  • G06T2207/10004—Still image; Photographic image
• • G—PHYSICS
  • G06—COMPUTING OR CALCULATING; COUNTING
  • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
  • G06T2207/00—Indexing scheme for image analysis or image enhancement
  • G06T2207/30—Subject of image; Context of image processing
  • G06T2207/30108—Industrial image inspection
• • G—PHYSICS
  • G06—COMPUTING OR CALCULATING; COUNTING
  • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
  • G06T2207/00—Indexing scheme for image analysis or image enhancement
  • G06T2207/30—Subject of image; Context of image processing
  • G06T2207/30108—Industrial image inspection
  • G06T2207/30164—Workpiece; Machine component
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
  • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
  • Y02E60/10—Energy storage using batteries

Definitions

• This disclosure relates to but is not limited to the field of battery production technologies, and in particular, relates to a check method and device for a battery module.
• the battery module without a defect is conveyed by the conveyance apparatus to the second specified position, and a vacated position may receive a next battery module for a check.
• the battery module includes at least one battery cell.
• the tray carries the battery module, and flows to a check device along a flow direction of a transfer line, and the control apparatus is configured to check each battery cell in the battery module and each end plate of the battery module.
• the tray may be adapted to carry battery cells of different sizes and types.
• the image of the battery module may include but is not limited to an image of a single battery cell, an image of at least one end plate, or the like.
• a battery cell has an identification code, and information about the battery cell can be obtained by scanning the identification code.
• the identification code may include but is not limited to a bar code, a quick response code, or the like.
• step S11 includes step S111 and step S112.
• Step S112 Send a first obtaining instruction to the vision capture mechanism, to enable the vision capture mechanism to capture the first image of the target battery cell based on the first obtaining instruction.
• the first obtaining instruction may be any suitable instruction, and the first obtaining instruction is used to obtain the first image of the battery cell.
• Step S114 Send a second obtaining instruction to the vision capture mechanism, to enable the vision capture mechanism to capture the second image of the target end plate based on the second obtaining instruction.
• the check result of the battery module may include but is not limited to "pass”, "fail”, or the like.
• the check result of the battery module may be determined based on a first check result of each battery cell in the battery module and a second check result of each end plate of the battery module.
• the first check result of the battery cell may include but is not limited to "pass", "fail”, or the like.
• the second check result of the end plate may include but is not limited to "pass”, "fail”, or the like.
• the first check result of each battery cell may be first determined, or the second check result of each end plate may be first determined, or the first check result of each battery cell and the second check result of each end plate may be simultaneously determined.
• the first check result of each battery cell is determined, and the check result of the battery module is determined based on each first check result.
• each first check result is “pass”
• “pass” is used as the check result of the battery module.
• a certain first check result is "fail”
• "fail” is used as the check result of the battery module.
• a check result of a certain battery cell or end plate indicates "fail”
• a plurality of checks may be performed. To be specific, an image of the battery cell/end plate is re-obtained for another check. In this way, a misjudgment rate is reduced.
• the check result of the battery module may include but is not limited to the first check result, a first check result of a next target battery cell, a second check result of an end plate, or the like.
• the first check result indicates that the target battery cell has a defect
• the first check result is used as the check result of the battery module.
• the first check result of the next target battery cell or the second check result of the end plate is used as the check result of the battery module.
• step S121 determines a first check result of the target battery cell based on the first image of the target battery cell.
• Step S1211 Recognize the first image of the target battery cell, to obtain information about the target battery cell.
• Step S1212 Check the information about the target battery cell, to obtain the first check result of the target battery cell.
• a check on the target battery cell may include but is not limited to whether the battery cell is qualified, whether the battery cell is a battery cell of a current product, or the like.
• the information about the target battery cell may be transferred to a MES (Manufacturing Execution System, manufacturing execution system), and the target battery cell is checked by using the MES, to obtain the first check result.
• the MES is mainly used to obtain output information of a plurality of devices, and the output information may include but is not limited to output time of a plurality of products output by each device, an identification used to indicate whether the plurality of products are qualified, or the like.
• Step S1214 In a case that the first check result of the target battery cell indicates that no defect is present and the target battery cell meets a preset condition, control the vision capture mechanism to capture a first image of a next target battery cell; determine a first check result of the next target battery cell based on the first image of the next target battery cell; and determine the check result of the battery module based on the first check result of the next target battery cell.
• step S1214 control the vision capture mechanism to capture a first image of a next target battery cell
• step S11 determine a first check result of the next target battery cell based on the first image of the next target battery cell; and determine the check result of the battery module based on the first check result of the next target battery cell
• Step S1215 In a case that the first check result of the target battery cell indicates that no defect is present and the target battery cell does not meet the preset condition, control the vision capture mechanism to capture the second image of the target end plate; determine a second check result of the target end plate based on the second image of the target end plate; and determine the check result of the battery module based on the second check result of the target end plate.
• the target end plate may be a certain end plate or all end plates at two ends of the battery module.
• control the vision capture mechanism to capture the second image of the target end plate in step S1215, reference may be made to the specific implementations of step S11.
• the target end plate includes a certain end plate of the battery module
• a second check result of each target end plate indicates that no defect (to be specific, reverse assembly, misaligned assembly, incorrect assembly, or the like) is present
• "pass" is used as the check result of the battery module
• a second check result of a certain target end plate indicates that a defect (to be specific, reverse assembly, misaligned assembly, incorrect assembly, or the like) is present
• "fail” is used as the check result of the battery module.
• the second check result of the target end plate may include but is not limited to "pass”, "fail”, or the like.
• Step S1222 Check the information about the target end plate, to obtain the second check result of the target end plate.
• the second check result of the target end plate may be obtained by comparing the target end plate with a corresponding standard end plate.
• “fail” is used as the second check result of the target end plate, or if the target end plate is substantially the same as the corresponding standard end plate, "pass” is used as the second check result of the target end plate.
• Step S1223 In a case that the second check result of the target end plate indicates that the target end plate has a defect, use the second check result of the target end plate as the check result of the battery module.
• Step S1224 In a case that the second check result of the target end plate indicates that the target end plate has no defect, control the vision capture mechanism to capture the first image of the target battery cell; determine a first check result of the target battery cell based on the first image of the target battery cell; and determine the check result of the battery module based on the first check result of the target battery cell.
• the information about the target battery cell/end plate is obtained through image recognition, so that accuracy of the information is improved, thereby improving accuracy of the check result.
• the target battery cell/end plate is automatically checked, which improves check accuracy and check efficiency compared with a manual check.
• the check result of the battery module is determined based on the first check result of the target battery cell and/or the second check result of the target end plate, so that accuracy and comprehensiveness of the check result are improved, thereby improving quality and stability of an assembled battery pack.
• Step S13 In a case that the check result indicates that the battery module has a defect, control a discharge apparatus to move the battery module into a carrier apparatus.
• the battery module is automatically checked, which reduces check costs and check efficiency compared with a manual check.
• each battery cell and end plate in the battery module are checked, to improve accuracy of the check result of the battery module, so as to improve quality and stability of the battery module, and further improve performance and a yield of a formed battery pack.
• a faulty battery module is automatically discharged, which reduces labor costs and shortens handling duration compared with manual discharge, so that productivity of a line is ensured, and production requirements of high timeliness and high efficiency can be met.
• the faulty battery module is stored by using the carrier apparatus, so that automatic running of a system is implemented, and a possibility of a shutdown in a case that a battery module has a defect is reduced.
• Step S14 In a case that the check result indicates that the battery module has no defect, convey the battery module to a second preset position.
• the second specified position may be any suitable position.
• the second specified position may be a position in a next process (for example, boxing) after assembly of the battery module. In this case, if the battery module has no defect, the battery module is conveyed to a next station, to facilitate detection of a next battery module.
• the check method further includes step S15.
• Step S15 Control the vision capture mechanism to move to an initial position.
• the initial position may be any suitable position, for example, a position near a left side of a battery module or a position near a right side of the battery module.
• the vision capture mechanism needs to be controlled to move to the initial position, to facilitate capture of images of each battery cell and end plate of the next battery module.
• the check method further includes step S16.
• Step S16 In a case that the check result indicates that the battery module has a defect, control a preset prompting apparatus to output corresponding prompting information.
• corresponding fault-prompting information is output in real time, to help a worker deal with it in time, thereby ensuring proper discharge of a next faulty battery module, so that the line does not stop when a battery module is faulty.
• FIG. 2 is a schematic diagram 2 of an implementation procedure of a check method for a battery module according to an embodiment of this disclosure. As shown in FIG. 2 , the check method is applied to a control apparatus, and the check method includes step S21 to step S25.
• Step S21 Obtain information about the battery module.
• the information about the battery module may be obtained in any suitable manner. For example, a bar code/quick response code on the battery module is scanned. For another example, an identification on a tray that carries the battery module is obtained.
• Step S22 Adjust a working parameter of a vision capture mechanism based on the information about the battery module.
• the working parameter of the vision capture mechanism may include but is not limited to a longitudinal distance between two shafts in a variable-distance mechanism, a position of a capture apparatus on a corresponding shaft, a transverse movement distance of each shaft, a working parameter of the capture apparatus, or the like.
• a first adjustment instruction including a new working parameter is sent to the vision capture mechanism, so that the vision capture mechanism makes a corresponding adjustment based on the new working parameter.
• a second adjustment instruction is sent to the vision capture mechanism, so that the vision capture mechanism works based on the second adjustment instruction.
• the second adjustment instruction may include a working parameter of the previous battery module, or may not include a working parameter of the previous battery module.
• Step S23 Control the vision capture mechanism to capture an image of the battery module on the tray.
• Step S24 Determine a check result of the battery module based on the image of the battery module, where the check result indicates whether the battery module has a defect, and the defect includes at least one of the following: a faulty battery cell is present in the battery module, or an end plate of the battery module is improperly assembled.
• Step S25 In a case that the check result indicates that the battery module has a defect, control a discharge apparatus to move the battery module into a carrier apparatus.
• step S23 to step S25 correspond to step S11 to step S13 respectively, and during implementation, reference may be made to the specific implementations of step S11 to step S13.
• information about two battery modules is compared, to quickly determine whether a type of a battery module needs to be switched.
• the working parameter of the vision capture mechanism is adjusted in time to be compatible with battery modules of different specifications, so that universality and adaptability of a check device are improved, and requirements of highly flexible battery production can be met.
• FIG. 3 is a schematic diagram 1 of a composition structure of a check device for a battery module according to an embodiment of this disclosure.
• the check device 30 includes a vision capture mechanism 31, a discharge apparatus 32, and a carrier apparatus 33.
• the carrier apparatus 33 is configured to store a faulty battery module.
• the discharge apparatus 32 is configured to: in a case that a check result of the battery module indicates that the battery module has a defect, move the battery module into the carrier apparatus, where the check result of the battery module is determined based on the image of the battery module, and the defect includes at least one of the following: a faulty battery cell is present in the battery module, or a target end plate of the battery module is improperly assembled.
• the vision capture mechanism 31 may be any suitable apparatus that can implement this function, for example, a capture apparatus or a capture apparatus and a variable-distance mechanism.
• the capture apparatus may include but is not limited to a camera, a camera lens, or the like.
• the variable-distance mechanism includes at least two shafts, the capture apparatus is located on the variable-distance mechanism, and a quantity of capture apparatuses may be adapted to a quantity of shafts of the variable-distance mechanism.
• the vision capture mechanism 31 includes a variable-distance mechanism and a capture apparatus located on the variable-distance mechanism, and a quantity of shafts of the variable-distance mechanism matches a quantity of cameras in the capture apparatus.
• variable-distance mechanism may be any suitable mechanism.
• the variable-distance mechanism includes two shafts, and a quantity of capture apparatuses may be adapted to a quantity of shafts of the variable-distance mechanism.
• the variable-distance mechanism includes two shafts, there may be two capture apparatuses.
• each capture apparatus is installed on one shaft, a distance between different capture apparatuses is adjusted by moving two shafts of the variable-distance mechanism longitudinally, a height of the capture apparatus from a battery cell is adjusted by adjusting a position of the capture apparatus on the shaft, and a capture position is adjusted by moving the shaft transversely, so that the capture apparatus can capture battery cells or end plates of the battery module in different positions.
• the capture apparatus is installed on the shaft of the variable-distance mechanism to implement movement of the capture apparatus, to obtain images of target end plates and target battery cells in different positions. This improves flexibility of the capture apparatus and reduces hardware costs and system complexity compared with fastening a capture apparatus in each position.
• the image of the battery module may include but is not limited to at least one of the following: a first image of a target battery cell in the battery module, a second image of the target end plate of the battery module, or the like.
• the control apparatus may be any suitable apparatus that can implement this function, for example, a PLC.
• a PLC a suitable apparatus that can implement this function
• the control apparatus may be located in the check device, or may be independent of the check device.
• the battery module is automatically checked based on the image of the target battery cell. This improves check accuracy and check efficiency compared with a manual check.
• the image of the battery module includes the second image of the target end plate of the battery module.
• the vision capture mechanism 31 is further configured to: capture the second image of the target end plate; and send the second image of the target end plate to a preset control apparatus, so that the control apparatus determines the check result of the battery module based on the second image of the target end plate.
• step S122 For the control apparatus determining the check result of the battery module based on the second image of the target end plate, reference may be made to the specific implementations of step S122.
• the battery module is automatically checked based on the image of the target end plate. This improves check accuracy and check efficiency compared with a manual check.
• the carrier apparatus 33 may be any suitable apparatus that can store a battery module, for example, a trolley. During implementation, the carrier apparatus 33 may be in any suitable shape, for example, a roller shape.
• the carrier apparatus 33 is connected to the check device 30 in a detachable manner, such as an insertable/removable manner, to facilitate removal of the faulty battery module.
• a spare carrier apparatus is inserted into the check device, to facilitate proper discharge of a next faulty battery module.
• the check device further includes a conveyance apparatus.
• the conveyance apparatus is configured to convey the battery module to a first specified position, where a direction in which the conveyance apparatus conveys the battery module is the same as a direction of the discharge apparatus, and the direction in which the conveyance apparatus conveys the battery module crosses a direction of the carrier apparatus.
• the conveyance apparatus may be any suitable apparatus that can implement a conveyance function, for example, a belt conveyor.
• the first specified position may be any suitable position.
• the first specified position is a position in a direction of conveying a battery module.
• the discharge apparatus is located in the direction of conveying a battery module, to facilitate quick and accurate discharge of a faulty battery module.
• the direction of the carrier apparatus crosses the direction of conveying a battery module. In this way, a position of the carrier apparatus avoids a battery module conveyed by the conveyance apparatus. This helps the conveyance apparatus convey the battery module smoothly.
• FIG. 4 is a schematic diagram 2 of a composition structure of a check device for a battery module according to an embodiment of this disclosure.
• the check device includes a vision capture mechanism 31, a discharge apparatus (not shown in the figure), a carrier apparatus 33, a rack 35, and a conveyance apparatus 36.
• the vision capture mechanism 31 is disposed on the rack 35, and the vision capture mechanism 31 includes a first shaft, a second shaft, a first camera, and a second camera.
• the first camera is located on the first shaft
• the second camera is located on the second shaft.
• the first shaft and the second shaft are controlled to move toward or away from each other in a direction Y, to adjust a longitudinal distance between the first shaft and the second shaft;
• the first shaft and the second shaft are controlled to move in a direction X, to implement transverse movement of the first shaft and the second shaft;
• the first camera is controlled to move in a direction Z, to adjust a height of the first camera from a target battery cell
• the second camera is controlled to move in the direction Z, to adjust a height of the second camera from a target battery cell.
• the discharge apparatus is disposed on the rack 35, and is configured to move a faulty battery module into the carrier apparatus 33.
• the carrier apparatus 33 is connected to the rack 35 in an insertable/removable manner, and the carrier apparatus 33 is configured to store a faulty battery module.
• the conveyance apparatus 36 is disposed on the rack 35, and is configured to convey a battery module on a tray 37 to a specified check position along a flow direction of the battery module.
• the conveyance apparatus 36 may be a belt conveyor.
• the battery module is conveyed by the conveyance apparatus 36 to the check position for a check. After the check on the battery module in the check position is completed, the battery module in the check position may be conveyed by the conveyance apparatus 36 to a second specified position, and a next to-be-checked battery module may be placed in the vacated check position.
• the check device further includes a control apparatus.
• the control apparatus is configured to: determine a check result of the battery module based on an image of the battery module; and in a case that the check result indicates that the battery module has a defect, control the discharge apparatus to move the battery module into the carrier apparatus.
• control apparatus may be any suitable apparatus that can implement this control function, for example, a PLC.
• control apparatus may be any suitable apparatus that can implement this control function, for example, a PLC.
• FIG. 5 is a schematic diagram 3 of a composition structure of a check device for a battery module according to an embodiment of this disclosure.
• the check device 30 includes a vision capture mechanism 31, a discharge apparatus 32, a carrier apparatus 33, and a control apparatus 34.
• the vision capture mechanism 31, the discharge apparatus 32, and the carrier apparatus 33 are separately in communication connection with the control apparatus 34.
• the control apparatus 34 is configured to send, to the vision capture mechanism 31, a second adjustment instruction including a working parameter corresponding to the battery module.
• the control apparatus 34 is further configured to send a first movement instruction to the vision capture mechanism 31, to enable the vision capture mechanism 31 to move from an initial position to a to-be-checked battery cell (corresponding to the foregoing target battery cell) based on the first movement instruction.
• the discharge apparatus 32 is controlled to move the battery module into the carrier apparatus 33, and a fifth movement instruction is sent to the vision capture mechanism 31, to enable the vision capture mechanism 31 to move to an initial position based on the fifth movement instruction.
• a next battery cell is used as a to-be-checked battery cell, and a second movement instruction is sent to the vision capture mechanism 31, to enable the vision capture mechanism 31 to move from a current position to the to-be-checked battery cell based on the second movement instruction, and a process of checking the to-be-checked battery cell continues.
• a third movement instruction is sent to the vision capture mechanism 31, to enable the vision capture mechanism 31 to move to a preset position based on the third movement instruction.
• the control apparatus 34 is further configured to send a second obtaining instruction to the vision capture mechanism 31.
• the control apparatus 34 is further configured to determine a second check result of the target end plate based on the second image of the target end plate.
• the control apparatus 34 is further configured to: in a case that the second check result of the target end plate is "fail”, control the discharge apparatus 32 to move the battery module into the carrier apparatus 33; or in a case that the second check result of the target end plate is "pass”, convey the battery module to a next assembly station; and send a fifth movement instruction to the vision capture mechanism 31, to enable the vision capture mechanism 31 to move to an initial position based on the fifth movement instruction.
• the check device further includes a prompting apparatus.
• the control apparatus is further configured to: in a case that a check result indicates that the battery module has a defect, control the prompting apparatus to output prompting information.
• the prompting apparatus may be any suitable apparatus that can implement a prompting function, for example, a display apparatus or a voice apparatus.
• the prompting apparatus is in communication connection with the control apparatus.
• the prompting information may be any suitable prompting information.
• the prompting information may be "The faulty battery module has been discharged. Please deal with it in time”.
• FIG. 6 is a schematic diagram 3 of an implementation procedure of a check method for a battery module according to an embodiment of this disclosure. As shown in FIG. 6 , the check method includes step S301 to step S314.
• Step S301 In response to detecting that a tray carrying a battery module flows to a check position along a flow direction of a line, control the tray to be jacked.
• the specified battery cell may be a first battery cell.
• Step S304 Control the vision capture mechanism to move to the target battery cell and capture a first image of the target battery cell.
• Step S305 Determine a first check result of the target battery cell based on the first image of the target battery cell.
• information about the target battery cell is obtained based on the first image, and the information about the target battery cell is sent to a MES for a check, to obtain the first check result.
• Step S306 Determine whether the first check result is "pass”, and if yes, proceed to step S307, or if no, proceed to step S313.
• Step S307 Determine whether the target battery cell is a last battery cell, and if yes, proceed to step S309, or if no, proceed to step S308.
• Step S308 Use a next battery cell as a target battery cell, and proceed to step S304.
• Step S309 Control the vision capture mechanism to move to a preset position and capture a second image of a target end plate.
• Step S310 Determine a second check result of the target end plate based on the second image of the target end plate.
• Step S311 Determine whether the second check result is "pass”, and if yes, proceed to step S312, or if no, proceed to step S313.
• Step S312 Use "pass" as a check result of the battery module, control the tray to be dropped, control the battery module to flow to a next station, and proceed to step S314.
• Step S313 Use "fail” as a check result of the battery module, control the tray to be dropped, control a discharge apparatus to move the battery module into a carrier apparatus, output preset prompting information, and proceed to step S314.
• a worker removes the carrier apparatus from the check device and inserts a spare carrier apparatus, to facilitate proper discharge of a next faulty battery module.
• a control apparatus in a case that an image of the battery module includes the first image of the target battery cell in the battery module, a control apparatus is further configured to: control the vision capture mechanism to move from a current position to a position corresponding to the target battery cell, and send a first obtaining instruction to the vision capture mechanism.
• the vision capture mechanism is further configured to capture the first image of the target battery cell based on the first obtaining instruction.
• the control apparatus in a case that the first check result of the target battery cell indicates that no defect is present, is further configured to: in a case that the target battery cell meets a preset condition, control the vision capture mechanism to move to a position corresponding to a next target battery cell, and send a first obtaining instruction to the vision capture mechanism, to enable the vision capture mechanism to capture a first image of the next target battery cell; and/or in a case that the target battery cell does not meet the preset condition, control the vision capture mechanism to move to a preset position, and send a second obtaining instruction to the vision capture mechanism, to enable the vision capture mechanism to capture the second image of the target end plate of the battery module.
• control apparatus in a case that the image of the battery module includes the second image of the target end plate of the battery module, is further configured to: control the vision capture mechanism to move from a current position to a preset position, and send a second obtaining instruction to the vision capture mechanism.
• the vision capture mechanism is further configured to capture the second image of the target end plate based on the second obtaining instruction.
• the check method further includes step S43.
• Step S43 When the check result of the battery module indicates that the battery module has no defect, a conveyance apparatus of the check device conveys the battery module to a second specified position.
• the conveyance apparatus may be any suitable apparatus that can implement a conveyance function, for example, a belt conveyor.
• the second specified position may be any suitable position.
• the second specified position may be a position in a next process (for example, boxing) after assembly of the battery module.
• the battery module without a defect is conveyed by the conveyance apparatus to the second specified position, and a vacated position may receive a next battery module for a check.
• the check method further includes at least one of step S441 to step S443.
• Step S441 In a case that a first check result of the target battery cell indicates that no defect is present and the target battery cell meets a preset condition, the variable-distance mechanism moves from the capture position corresponding to the target battery cell to a capture position corresponding to a next target battery cell; and when the variable-distance mechanism moves to the capture position corresponding to the next target battery cell, the capture apparatus captures a first image of the next target battery cell.
• the preset condition may be any suitable condition, for example, "not a last battery cell".
• a distance between the capture position corresponding to the next target battery cell and the capture position corresponding to the target battery cell may be a distance between the two battery cells.
• step S441 For "the variable-distance mechanism moves from the capture position corresponding to the target battery cell to a capture position corresponding to a next target battery cell; and when the variable-distance mechanism moves to the capture position corresponding to the next target battery cell, the capture apparatus captures a first image of the next target battery cell" in step S441, reference may be made to the specific implementations of step S411 and step S412.
• Step S442 In a case that the first check result of the target battery cell indicates that no defect is present and the target battery cell does not meet the preset condition, the variable-distance mechanism moves from the capture position corresponding to the target battery cell to the capture position corresponding to the target end plate of the battery module; and when the variable-distance mechanism moves to the capture position corresponding to the target end plate, the capture apparatus captures the second image of the target end plate.
• a preset position may be any suitable position in which the second image of the target end plate can be obtained. In some implementations, for different types of battery cells, the preset position may be the same or different.
• the variable-distance mechanism moves from the capture position corresponding to the target battery cell to the capture position corresponding to the target end plate of the battery module; and when the variable-distance mechanism moves to the capture position corresponding to the target end plate, the capture apparatus captures the second image of the target end plate" in step S442
• Step S443 In a case that the first check result of the target battery cell indicates that a defect is present, the variable-distance mechanism moves from the capture position corresponding to the target battery cell to an initial position.
• the initial position may be any suitable position, for example, a position near a left side of a battery module or a position near a right side of the battery module.
• the capture apparatus needs to be moved to the initial position, to facilitate capture of an image of a next battery module.
• variable-distance mechanism moves based on the target battery cell and the check result of the target battery cell, so that accuracy of movement of the variable-distance mechanism is improved.
• the capture apparatus is moved to obtain images of objects in different positions, which reduces hardware costs and system complexity compared with deploying a capture apparatus in each position.
• Step S451 In a case that a second check result of the target end plate indicates that no defect is present, the variable-distance mechanism moves from the capture position corresponding to the target end plate to the capture position corresponding to the target battery cell in the battery module; and when the variable-distance mechanism moves to the capture position corresponding to the target battery cell, the capture apparatus captures the first image of the target battery cell.
• step S451 reference may be made to the specific implementations of step S411 and step S412.
• variable-distance mechanism in a case that the check result of the target end plate and a first check result of each battery cell in the battery module indicate that no defect is present, the variable-distance mechanism needs to move to an initial position.
• Step S452 In a case that the second check result of the target end plate indicates that a defect is present, the variable-distance mechanism moves from the capture position corresponding to the target end plate to an initial position.
• the initial position may be any suitable position, for example, a position near a left side of a battery module or a position near a right side of the battery module.
• the capture apparatus needs to be moved to the initial position, to facilitate capture of an image of a next battery module.
• variable-distance mechanism moves based on the check result of the target end plate, so that accuracy of movement of the variable-distance mechanism is improved.
• the capture apparatus is moved to obtain images of objects in different positions, which reduces hardware costs and system complexity compared with deploying a capture apparatus in each position.
• the term "include”, “comprise”, or any other variant thereof is intended to cover a non-exclusive inclusion, so that a process, a method, an article, or an apparatus that includes a list of elements not only includes those elements but also includes other elements that are not expressly listed, or further includes elements inherent to such a process, method, article, or apparatus. Without more constraints, an element preceded by "includes a " does not preclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.
• each battery cell and end plate in the battery module are checked, to improve accuracy of the check result of the battery module, so as to improve quality and stability of the battery module, and further improve performance and a yield of a formed battery pack.
• a faulty battery module is automatically discharged, which reduces labor costs and shortens handling duration compared with manual discharge, so that productivity of a line is ensured, and production requirements of high timeliness and high efficiency can be met.

Landscapes

• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Computer Vision & Pattern Recognition (AREA)
• Theoretical Computer Science (AREA)
• Life Sciences & Earth Sciences (AREA)
• Health & Medical Sciences (AREA)
• Quality & Reliability (AREA)
• Chemical & Material Sciences (AREA)
• Analytical Chemistry (AREA)
• Biochemistry (AREA)
• General Health & Medical Sciences (AREA)
• Immunology (AREA)
• Pathology (AREA)
• Signal Processing (AREA)
• Secondary Cells (AREA)
• Battery Mounting, Suspending (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=88659362

Family Applications (1)

Country Status (3)

Families Citing this family (3)

Family Cites Families (13)

• 2023
  • 2023-10-11 CN CN202311310078.9A patent/CN117058138B/zh active Active
  • 2023-11-27 EP EP23954955.3A patent/EP4589525A4/de active Pending
  • 2023-11-27 WO PCT/CN2023/134403 patent/WO2025076936A1/zh active Pending

Also Published As

Similar Documents

Legal Events